Peters



5 Sheets-Sheet 1.

(N0 Model.)

J. WALKER.

MOLDING MACHINERY.

No. 248,534. Patented Oct. 18,1881.

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(NoModeL) 5 Sheets-Sheet 2. J. WALKER.v

MOLDING MACHINERY.

'No. 248,534. Patented Oct. 18,1881.

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5 Sheets-Sheet 3. J. WALKER.

MOLDING MACHINERY.

Patented Oct. 18,1881.

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5 Sheets-Sheet 4.

Patented Oct. 18,1881.

J. WALKER.

MOLDING MACHINERY.

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N. FEYERS. How-b25031:-

(No Model.)

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UNITED STATES PATENT OFFICE.

JOHN WALKER, OF INDIANAPOLIS, INDIANA.

MOLDING MACHINERY.

SPECIFICATION forming part of Letters Patent No. 248,534, dated October 18, 1881. Application filed J anunry 26, 1881. (No model.)

To all-whom it may concern:

Be it known that 1, JOHN WALKER, of Indianapolis, in the county of Marion and State of Indiana, have invented certain Improvements in Molding Machinery, of which the following is a specification; and I do hereby declare that in the same is contained a full, clear, and exact description of my said invention, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

This invention relates to certain improvements in a mold-striking machine for which I have made application for Letters Patent of the United States; and it consists in certain peculiarities of construction whereby the machine is adapted for a greater range of work and is susceptible ofmore extended adjustment than the machine above alluded to.

In the further description of my present improvements which follows reference is made to the accompanying drawings, and to the letters of reference marked thereon.

Figure I is an exterior side view of the improved machine. Fig. II is a plan of the invention. Fig. III is a view ofa part of the machine. Figs. IV and V are views of other portions of the machine on an enlarged scale. Fig. VLis a sectional elevation of Fig. I. Figs. VII, VIII, IX, X, XI, and XII are views of part of the invention on an enlarged scale. Figs. XIII and XIV are exterior views of two flasks and the faceplate of the machine, showing the positions which the said flasks occupy during the molding operation. Fig. XV is a sectional view of the said flasks placed together.

Similar letters of reference indicate similar parts in all the views.

Ais the bed-plate of the machine, upon which theflasksareseated. Thebed-plateisprovided with a series of pin-holes, into which removable pins are inserted to sustain and center the flask B, the bottom of which is faced so as to present a straight surface.

The bottom plate, 0, of the flask has a faced inner surface, and forms, with the flask, a true joint, which may be made open to admit of the escape of gases from the sand in casting, if desired, by the interposition between the said flask and plate of a series of washers. The outer or lower suface of the bottom plate is left rough, and the said plate is slotted where the removable pins pass through it.

The under side of the bed-plate is strongly ribbed and flanged, and it is bolted to a sub bed-plate, D, intended to be placed below the floor, which is marked 00 w.

An extension, D, of the sub bed-plate is used to sustain the columnarframe E, upon the upper end of which rests the spindle-arm F. The columnar frame E, with the arm F, is adjustable in height to suit flasks ofdifferent depths, and this adj ustability is effected as follows: One side of the portion of the said columnar frame which is inclosed by the extension D of the bed-plate is provided with teeth, so as to form a rack, and a pinion, a, on a shaft, b, is geared therewith, as shown in Figs. VII, VIII, and IX of the drawings. The shaft 0 is revolved by means of a worm-wheel, c, and a worm, d, the latter being operated by hand through the medium of a hand-wheel, 6. After the vertical adjustment of the columnar frame E, it is secured by contracting the surrounding part of the extension D by means of bolts, one side of the said extension being slotted to admit of this reduction in diameter, as will be seen by reference to Fig. IX of the drawings. The arm F swings aroundhorizontally upon the head of the columnar frame-a very desirable movement when a flask is to be placed upon or removed from the bed-plate-and it obviates the necessity of detaching the strikef from its supporting-arm g on the spindle G. The spindle consists of a hollow bar adapted to turn about a central rod, h, the lower end of which is seated in the bedplate, and it is confined in a sleeve, 1'.

A feather, It, serves to prevent independent rotary movement of either the sleeve or spindle, and at the same time admits of a vertical independent movement of the spindle through the agency ofanut, l, havinghandles, as shown.

The sleeve t" is confined in a circular aperture in the end of'the arm F, which is slotted and provided with bolts, in like manner to the extension D' ofthe sub bed-plate. Ahand-wheel, H, secured to the lower end of the sleeve, is used to turn the spindle and strike.

In Figs. XIII and XIV are shown the drag and cope flasks in the positions which they are placed during the molding operation; and it will be seen that they are connected by dotted lines, which indicate how the flasks are brought together. In Fig. XV the said flasks are shown together and the mold complete.

It will be understood thatin carrying out my invention I construct all the flasks of a common diameter, with flanges at the top and bottom, which correspond in all essential particulars-that is to say, the said flanges are matched, and either side of the flasks can be used as the face.

By means of this machine I am able to successfully divide the labor of molding by preparing the drag and cope sections of molds complete, except the tooth-depressions therein, the latter operation alone being performed in the gear-molding machine to which the flasks are transferred.

I claim as myinvention- 1. In a mold-striking machine, a columnar frame located exterior-1y of the bed-plate, a spindle-arm adapted for rotation in a horizontal plane seated on the upper end of the said columnar frame, a revoluble spindle confined in the inner end of the said arm, and means for effecting the vertical adjustment of the said columnar frame and spindle-arm and the said revoluble spindle, substantially as specified.

2. In a mold-striking machine, a bed-plate projecting upward from a sub bed-plate having a vertical socket located exteriorly of the said bed-plate, a columnar frame supported within said socket, adapted to have a vertical movement only therein, and provided with a rack secured to one side thereof, whereby it is elerated and depressed through the medium of a pinion, worm-Wheel, and worm, a spindle-arm seated on the head of said columnar frame, adapted to be turned in a horizontal plane independently ofthe said columnar frame, a spindle adapted to turn freely in the inner end of 40 the spindle-arm, carrying a strike-supporting arm, and means for eflecting the vertical adjustment of said spindle and its strike-supporting; arm, substantially as specified.

JOHN \VALKER.

Witnesses:

WM. G. WAssEN,

W. F. HoLLmAY. 

